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Copyright ©2013 Baishideng Publishing Group Co.
World J Gastrointest Oncol. Jul 15, 2013; 5(7): 132-138
Published online Jul 15, 2013. doi: 10.4251/wjgo.v5.i7.132
Table 2 Perihilar bile duct tumors (American Joint Commission on Cancer Staging 7th edition)
T1Tumor confined to bile duct histologically
T2aTumor beyond the wall of bile duct into adjacent fat
T2bTumor beyond the wall of bile duct into liver parenchyma
T3Tumor invades ipsilateral portal vein (R or L) or hepatic artery (R or L)
T4Tumor invades
(1) Main portal vein or its branches bilaterally (or)
(2) Common hepatic artery (or)
(3) The second-order biliary radicals bilaterally
(4) Unilateral second-order biliary radicals with contralateral portal vein or hepatic artery involvement
NxRegional lymph nodes cannot be assessed.
N0No regional lymph node metastasis
N1Regional lymph node metastasis (including nodes along the cystic duct, common bile duct, hepatic artery, and portal vein)
N2Metastasis to periaortic, pericaval, superior mesenteric artery, and/or celiac artery lymph nodes
M0No distant metastasis
M1Distant metastasis
Tumor stage AJCC staging 6th edition
0Tis, N0, M0
IT1, N0, M0
IIT2a-b, N0, M0
IIIaT3, N0, M0
IIIbT1 or T2
T3, N1, M0
IVaT4, N0
N1, M0
IVbAny T, N2, M0
Any T, any N, M1